... sequence protection 3) MCU control, no brush, no wea ST Step-down transformer Specifications Specifications :1.Input voltage:rated voltage +/-10% 2.Output ... set Control Transformer(BK,SBK),power transformer,electric transformer,JBK Machine Tool Control Transformer, Transformer,BKC,JBKDG & SGPower Transformer,Dry type transformer,Three-phase Dry-type Power Transformer,Transformer,SG ...